51564406556245 has 16 divisors (see below), whose sum is σ = 67852249733952. Its totient is φ = 37307078876160.

The previous prime is 51564406556219. The next prime is 51564406556281. The reversal of 51564406556245 is 54265560446515.

51564406556245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51564406556245 - 2³⁹ = 51014650742357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51564406556245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2428835667 + ... + 2428856896.

It is an arithmetic number, because the mean of its divisors is an integer number (4240765608372).

Almost surely, 2^{51564406556245} is an apocalyptic number.

51564406556245 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51564406556245 is a deficient number, since it is larger than the sum of its proper divisors (16287843177707).

51564406556245 is a wasteful number, since it uses less digits than its factorization.

51564406556245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857692772.

The product of its (nonzero) digits is 86400000, while the sum is 58.

The spelling of 51564406556245 in words is "fifty-one trillion, five hundred sixty-four billion, four hundred six million, five hundred fifty-six thousand, two hundred forty-five".